Flash LiDAR Vertical Subregion Layout to Reduce Blind Spots
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Solution Overview
Problem
Flash LiDAR systems have limited angles of view, resulting in large detection blind areas and insufficient detection distances, which reduces obstacle avoidance capability and increases power consumption and costs.
Innovation Solution
A LiDAR system with at least two laser transceiver components, each divided into multiple detection subregions along a vertical direction, where each component includes a laser emission and receiving device, emitting and receiving lasers in specific directions to reduce blind spots and improve energy utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If transmission power is significantly increased to increase detection distance, then detection distance is improved, but power consumption, thermal effect, and device costs greatly increase
Solution Approach 1:
The patent divides the detection region into multiple subregions along the vertical direction, with each subregion aligned with a different angle range. Multiple laser transceiver components are used, where each component emits and receives lasers for specific subregions. This segmentation allows the system to detect different vertical angles simultaneously without increasing transmission power, thereby improving detection distance coverage while controlling power consumption.
2Length of stationary object
If transmission power is significantly increased to increase detection distance, then detection distance is improved, but thermal effect and device costs greatly increase
Solution Approach 1:
The detection region is segmented into multiple subregions, and multiple laser transceiver components work in parallel to cover different vertical angle ranges. This approach distributes the detection workload across multiple components rather than requiring one component to operate at high power, thereby reducing thermal effects while achieving extended detection distance.
3Device complexity
If flash LiDAR system uses a single detection region, then structure remains simple, but detection blind area becomes large and obstacle avoidance capability is reduced
Solution Approach 1:
The patent segments the single detection region into multiple subregions along the vertical direction, with each subregion corresponding to a different angle range. Multiple laser transceiver components are employed, where each component is responsible for specific subregions. This segmentation eliminates detection blind areas by ensuring complete vertical angle coverage while maintaining relatively simple system structure through modular component arrangement.
Solution Approach 2:
The patent extends the detection coverage by adding the vertical dimension with multiple detection subregions at different angle ranges. Instead of expanding horizontally with a single component, the system uses vertical angle segmentation to cover the entire field of view, thereby eliminating blind spots without significantly increasing horizontal complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enlarges the detection region, reduces blind spots, enhances obstacle avoidance, and optimizes energy use, thereby improving the LiDAR system's performance and reducing power consumption and manufacturing costs.
Implementation Method 1
a laser receiving device configured to receive a reflected laser returned after the outgoing laser is reflected by an object in the corresponding detection region
Data Source
AI summary
This application discloses a LiDAR and an apparatus. The LiDAR includes: a casing, demarcating an emission chamber and a receiving chamber; a laser emission device, arranged in the emission chamber and configured to emit a laser beam to the first target region; and a plurality of laser receiving devices, arranged in the receiving chamber. The plurality of laser receiving devices receive a laser beam reflected from the second target region, and the first target region and the second target region are at least partially overlapped. The second target region includes a plurality of detection subregions, each detection subregion is smaller than the first target region and is at least partially overlapped with the first target region, and each laser receiving device receives, in a one-to-one correspondence manner, a laser beam reflected from each detection subregion.